#define _CRT_SECURE_NO_WARNINGS  1

#include"Date.h"

Date::Date(int year, int month, int day)
{
	_year = year;
	_month = month;
	_day = day;
}

bool Date::operator==( Date& d)
{
	return _year == d._year 
		&& _month == d._month 
		&& _day == d._day;
}

bool Date::operator>( Date& d)
{
	if (d._year > _year)
	{
		return true;
	}
	else if (d._year == _year && d._month > _month)
	{
		return true;
	}
	else if (d._year == _year && d._month == _month && d._day > _day)
	{
		return true;
	}
	return false;
}

bool Date::operator >= ( Date& d)
{
	return *this == d || *this > d;
}

bool Date::operator < ( Date& d)
{
	return !(d >= *this);
}

bool Date::operator <= (Date& d)
{
	return !(d > *this);
}

bool Date::operator != (Date& d)
{
	return !(d == *this);
}

int Date::GetMonthDay(int year, int month)
{
	int arr[13] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	if (month == 2 && ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0))
	{
		return 29;
	}
	else
		return arr[month];
}

Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		_month++;
		if (_month == 13)
		{
			_year++;
			_month = 1;
		}
	}
	return *this;
}

Date Date::operator+(int day)
{
	Date tmp(*this);
	tmp += day;

	return tmp;
	/*tmp._day += day;
	while (tmp._day > GetMonthDay(tmp._year, tmp._month))
	{
		tmp._day -= GetMonthDay(tmp._year, tmp._month);
		++tmp._month;
		if (tmp._month == 13)
		{
			++tmp._year;
			tmp._month = 1;
		}
	}
	return tmp;*/
}

Date& Date::operator++()
{
	*this += 1;
	return *this;
}

Date Date::operator++(int)
{
	Date tmp = *this;
	*this += 1;

	return tmp;
}

